JP7512182B2 - Absorbent articles - Google Patents

Description

The present invention relates to absorbent articles such as panty liners, panty liners, and sanitary napkins.

Absorbent articles are constructed by disposing an absorbent body between a top sheet and a back sheet. Generally, absorbent articles are narrow in the horizontal direction, which corresponds to the width of the wearer, and long in the vertical direction, which corresponds to the front-to-back direction, so liquid diffusion may be intentionally controlled and the absorption capacity increased according to the vertical length of the absorbent body. Since liquid diffusion in the top sheet constituting an absorbent article leads to an uncomfortable feeling of wetness, leakage prevention grooves are formed by squeezing the top sheet and absorbent body together to prevent unintended liquid diffusion and increase the ability of the absorbent body to draw liquid (see, for example, Patent Document 1).

JP 2014-68991 A

In an absorbent article, the leak-proof groove is a high-density region that is integrally compressed from the topsheet to the absorbent body, and is an area where bodily fluids from the wearer are more likely to be drawn in and pooled. For this reason, the color of bodily fluids is more noticeable in the leak-proof groove, which may cause visual discomfort to the wearer.
Furthermore, in an absorbent article, undesirable deformation of the absorbent body may cause a decrease in absorption performance, which may result in the wearer feeling uncomfortable when wearing the article.

The objective of the present invention is to provide an absorbent article that reduces the visual and physical discomfort felt by the wearer.

An absorbent article according to one aspect of the present invention comprises a top sheet, a back sheet, and an absorbent body.
The absorbent article has a longitudinal direction corresponding to the front-to-back direction of a wearer and a lateral direction perpendicular to the longitudinal direction.
The absorbent article has an excretory portion-facing region located in the longitudinal center, a front region located longitudinally forward from the excretory portion-facing region, and a rear region located longitudinally rearward from the excretory portion-facing region.
The top sheet is positioned on the skin side of the absorbent article.
The backsheet is positioned on the non-skin side of the absorbent article.
The absorbent body is located between the top sheet and the back sheet, and has a longitudinal length shorter than the top sheet and the back sheet. The absorbent body is the component having the highest absorption capacity among the components constituting the absorbent article.
The absorbent article includes a colored second sheet located between the top sheet and the absorbent body so as to cover the absorbent body in a plan view.
The skin side of the absorbent article has a pair of front and rear leakage prevention horizontal grooves formed by squeezing the top sheet and the colored second sheet together toward the non-skin side of the absorbent article, which do not reach the absorbent body, and each of the pair of leakage prevention horizontal grooves has a convex shape that protrudes outward in the vertical direction in a planar view, and the tips of the convex portions of the pair of leakage prevention horizontal grooves are located within the vertical area of the absorbent body in a planar view.
The absorbent article has a pair of left and right first constricted portions and a pair of left and right second constricted portions provided on both left and right side edges along the longitudinal direction of the excretory portion facing region.
The leakage-preventing horizontal groove does not cross a first imaginary line connecting the pair of first constricted portions and a second imaginary line connecting the pair of second constricted portions in a plan view.

As described above, the absorbent article of the present invention can reduce discomfort when worn.

1 is a plan view showing a folded and individually packaged absorbent article according to one embodiment of the present invention, which has been opened and unfolded to show the absorbent article with the individual packaging sheet still attached. 2 is an enlarged cross-sectional view showing a cross section taken along line II-II in FIG. 1, with the individual packaging sheet omitted. FIG. 2 is a plan view showing an example of a coating area and coating pattern of a first adhesive S1 disposed between a top sheet and a colored second sheet when the absorbent article is viewed in plan. FIG. 2 is a plan view showing an example of a coating area and coating pattern of a second adhesive S2 disposed between a colored second sheet and an absorbent body when the absorbent article is viewed in plan. FIG. 11 is a plan view showing an example of a coating area and coating pattern of a third adhesive S3 disposed between a back sheet and an absorbent body when the absorbent article is viewed in plan. 13 is a plan view showing an example of a coating area and coating pattern of a fourth adhesive S4 used on an absorbent body that constitutes a part of the absorbent article. FIG. FIG. 11 is a plan view showing another example of the application pattern of the second adhesive S2 disposed between the colored second sheet and the absorbent body in the absorbent article. FIG. 2 is a plan view of another absorbent article according to an embodiment of the present invention.

Below, an embodiment of the present invention will be described with reference to the drawings. Here, a panty liner will be taken as an example of an absorbent article. Panty liners are generally attached to the inside of the crotch area of underwear such as shorts during the period from the late menstrual period when the amount of menstrual blood is low until the non-menstrual period, and are used to absorb bodily fluids such as vaginal discharge, menstrual blood, or urine. As panty liners are rarely used for the purpose of absorbing large amounts of menstrual blood, they are generally narrower and thinner than other bodily fluid absorbent articles, such as sanitary napkins.

<Overall structure of panty liner>
1, a panty liner 1 as an absorbent article of the present invention has a vertical direction X corresponding to the front-to-back direction of a wearer, and a horizontal direction Y corresponding to the left-to-right direction of the wearer and perpendicular to the vertical direction X. The horizontal direction of the panty liner 1 corresponds to the width direction of the panty liner 1.
In this specification, with respect to the thickness direction Z of the panty liner 1, the side closer to the wearer's skin when worn may be referred to as the upper or skin side, and the side closer to the clothing may be referred to as the lower or non-skin side. In addition, in this specification, the "skin side" refers to the surface of the absorbent article or its constituent members that faces the skin side of the wearer when the absorbent article is worn, i.e., the side relatively closer to the wearer's skin. The "non-skin side" refers to the surface of the absorbent article or its constituent members that faces away from the wearer's skin when the absorbent article is worn. Here, "when worn" refers to a state in which the absorbent article is in a normal and proper wearing position, i.e., the correct wearing position of the absorbent article is maintained. In addition, in this specification, "plan view" refers to a plan view from the thickness direction Z.
For convenience, the terms "front" and "back" are used herein with reference to the front-to-back direction when worn. The panty liner 1 has an outer shape that is symmetrical about an imaginary horizontal line that bisects the longitudinal direction X and extends in the Y direction, and is configured so that either of the two ends of the panty liner 1 in the longitudinal direction X can be worn in the forward direction.

As shown in FIG. 1, the panty liner 1 extends along the longitudinal direction X, and when worn, is fixed to the inner surface of the wearer's clothing by an adhesive portion disposed on the non-skin side 1b of the panty liner 1. The panty liner 1 has an absorbent body 4, which will be described later, and has the function of absorbing liquids such as menstrual blood, vaginal discharge, and urine (hereinafter also referred to as "body fluids").

The panty liner 1 is divided along the longitudinal direction X into a front region 51, an excretory part facing region 52, and a rear region 53.
The excretory part facing region 52 faces the wearer's excretory parts (vaginal opening, urethral opening) when worn, and is a region to which bodily fluids are mainly supplied. The excretory part facing region 52 is located at the center in the longitudinal direction X of the panty liner 1. In the panty liner 1 in Fig. 1, the region in the longitudinal direction X of the excretory part facing region 52 corresponds to the entire length in the longitudinal direction X of the absorbent body 4 described below, i.e., the region from the front tip to the rear tip of the absorbent body 4.
The front region 51 is a region that is disposed in front of the excretory part facing region 52 (toward the wearer's abdomen) and is configured to face the front of the excretory part facing region of the wearer when worn.
The rear region 53 is a region that is disposed rearward (toward the wearer's back) of the excretory part facing region 52, and is configured to face the rear of the excretory part facing region of the wearer when worn.

The panty liner 1 may be packaged in an individual packaging sheet from the viewpoint of hygiene and portability. As shown in Fig. 1, an individually packaged panty liner 10 includes the panty liner 1 and an individual packaging sheet 9 arranged on the non-skin side 1b of the panty liner 1.
As shown in FIG. 2, the panty liner 1 has a skin side 1a and a non-skin side 1b.
When individually packaged, the panty liner 1 is folded in two places and maintained in a folded state in three with the skin side 1a of the panty liner 1 facing upward. Therefore, as shown in Fig. 1, the panty liner 1 is folded in the vertical direction X to form two fold lines, a first individual packaging fold line 31 and a second individual packaging fold line 32, which run along the horizontal direction Y. The first individual packaging fold line 31 is located forward of the second individual packaging fold line 32.
1, the first individual packaging fold line 31 is located at the same position as an imaginary horizontal line 34 extending parallel to a horizontal direction Y passing through a front tip portion in a vertical direction X of the absorbent body 4 described later. The second individual packaging fold line 32 is located at the same position as a second imaginary line 22 connecting a pair of second constricted portions 12 described later.
In the individually packaged state of the panty liner 10, the panty liner 1 is, for example, folded at the second individual packaging fold line 32 so that the skin side 1a is on the inside, and then folded at the first individual packaging fold line 31 so that the skin side 1a is on the inside.
In the following, when the configuration of a panty liner in an individually wrapped state folded in three is described, it will be clearly stated that the description refers to the panty liner in an individually wrapped state. If no such specification is made, the description will be of the configuration of the panty liner in an unfolded state as shown in FIG.

As shown in FIG. 2, the panty liner 1 is composed of components such as an absorbent body 4, a top sheet 2, a back sheet 3, and a colored second sheet 5. The top sheet 2 constitutes the skin side 1a of the panty liner 1. The back sheet 3 constitutes the non-skin side 1b of the panty liner 1. In the panty liner 1, the back sheet 3, the absorbent body 4, the colored second sheet 5, and the top sheet 2 are laminated in the thickness direction Z. These components are joined appropriately, for example, by bonding with an adhesive or heat sealing, or by embossing with compressed grooves. Details will be described later.

<External shape of panty liner>
The panty liner 1 has a front edge 16a, a rear edge 16b, a left edge 17a and a right edge 17b.
In a plan view, the panty liner 1 has a pair of left and right first constricted portions 11 and a pair of left and right second constricted portions 12 that divide the panty liner 1 into three portions along the longitudinal direction X. The pair of left and right first constricted portions 11 and the pair of left and right second constricted portions 12 are provided on both left and right side edges 17a, 17b along the longitudinal direction X of the panty liner 1. The panty liner 1 has a total of four constricted portions.
In a plan view, the pair of left and right first constricted portions 11 and the pair of left and right second constricted portions 12 are located within the excretory part facing region 52. The pair of left and right first constricted portions 11 and the pair of left and right second constricted portions 12 are arranged intermittently in the longitudinal direction X. In the panty liner 1, the first constricted portions 11 are located in the front in the longitudinal direction X, and the second constricted portions 12 are located in the rear.

The first constriction 11 and the second constriction 12 are each a portion where the width (dimension in the horizontal direction Y) of the panty liner 1 decreases and then increases when viewed from the front region 51 to the rear region 53 along the vertical direction X. The first constriction 11 and the second constriction 12 may be portions having a certain length in the vertical direction X of the panty liner 1, or may be portions that are identified by a single point that has no length. In the panty liner 1 shown in FIG. 1, the positions of the first constriction 11 and the second constriction 12 are identified by a single point. The first constriction 11 at the left edge 17a and the first constriction 11 at the right edge 17b are located at the same position when the panty liner 1 is viewed along the vertical direction X. The same is true for the second constriction 12.

The line segment passing through the pair of left and right first constrictions 11 is referred to as the first virtual line 21. The line segment passing through the pair of left and right second constrictions 12 is referred to as the second virtual line 22. The first virtual line 21 and the second virtual line 22 are straight lines extending parallel to the horizontal direction Y. Note that when the first constriction 11 and the second constriction 12 are portions having a certain length, for example a few mm, in the vertical direction X of the panty liner 1, the first virtual line 21 and the second virtual line 22 are imaginary wide straight lines extending parallel to the horizontal direction Y, with the vertical length of the portion as their width.

The panty liner 1 is divided into three parts, a front part F, a central part C, and a rear part R, along the longitudinal direction X by a pair of left and right first constrictions 11 and a pair of left and right second constrictions 12. The central part C is the area between a first imaginary line 21 and a second imaginary line 22. The front part F is located forward of the central part C. The rear part R is located rearward of the central part C. The panty liner 1 is divided into three equal parts along the longitudinal direction X by the first imaginary line 21 and the second imaginary line 22, and the length of the longitudinal direction X of the front part F, the central part C, and the rear part R are all approximately the same.
In a plan view, the first imaginary line 21 and the second imaginary line 22 are located in the excretory part facing region 52. The excretory part facing region 52 includes a central region C, a part of a front region F, and a part of a rear region R.

1, when viewed along the longitudinal direction X of the panty liner 1, the front portion F does not have a constant width, but has one portion b having a maximum width (this portion is referred to as the "maximum width portion b"). The maximum width portion b is a portion in the front portion F where the width changes from increasing to decreasing, and is located in the front region 51.
The width of the front portion F gradually decreases from the maximum width portion b toward the first constricted portion 11. The width of the front portion F also gradually decreases from the maximum width portion b toward the tip of the front edge 16a. Between the maximum width portion b and the first constricted portion 11, both side edges 17a, 17b of the front portion F are substantially straight. On the other hand, between the maximum width portion b and the tip of the front edge 16a, they are gently arcuate toward the tip. The front edge 16a and both side edges 17a, 17b are smoothly connected.

When the panty liner 1 is viewed along the longitudinal direction X, the rear portion R does not have a constant width, but has one portion c having a maximum width (this portion is referred to as the "maximum width portion c"). The maximum width portion c is a portion in the rear portion R where the width changes from increasing to decreasing, and is located in the rear region 53 in a plan view.
The width of the rear portion R gradually decreases from the maximum width portion c toward the second constricted portion 12. The width of the rear portion R also gradually decreases from the maximum width portion c toward the tip of the rear edge 16b. Between the maximum width portion c and the second constricted portion 12, both side edges 17a, 17b of the rear portion R are substantially straight. On the other hand, between the maximum width portion c and the tip of the rear edge 16b, they are gently arcuate toward the tip. The rear edge 16b and both side edges 17a, 17b are smoothly connected.

As shown in FIG. 1, both side edges 17a, 17b of the panty liner 1 have a pair of left and right convex portions 15 that protrude outward in the lateral direction Y between a pair of left and right first constrictions 11 and a pair of left and right second constrictions 12, i.e., at the central portion C.
When the panty liner 1 is viewed along the longitudinal direction X, the central portion C does not have a constant width, but has one area a having the maximum width (this area is referred to as the "maximum width portion a"). The maximum width portion a is the widest portion in the lateral direction Y between a pair of left and right convex portions 15. The maximum width portion a is the point in the central portion C where the width changes from increasing to decreasing.
The convex portion 15 has a gentle arc shape that convex outward in the horizontal direction Y. The maximum width portion a is formed at a position that divides the central portion C into two equal parts, front and rear, in the vertical direction X. The width of the central portion C gradually decreases from the maximum width portion a toward the first constricted portion 11. The width of the central portion C gradually decreases from the maximum width portion a toward the second constricted portion 12.

When force is applied to the panty liner 1 due to the wearer's movements or the like while it is being worn, the first constricted portion 11 and the second constricted portion 12 have the function of buffering the twist or stress that is propagated in the vertical direction X via the side edges, etc. of the panty liner 1, thereby reducing the influence of the force. As a result, even if twisting occurs in the front portion F, the central portion C, or the rear portion R, the twisting is unlikely to spread to the entire panty liner, and twisting of the panty liner 1 is effectively prevented.
Furthermore, since both side edges 17a, 17b (left side edge 17a, right side edge 17b) of the central portion C have a convex arc shape facing outward in the lateral direction Y, when the panty liner 1 is subjected to a force inward in the lateral direction Y from both legs of the wearer while being worn, deformation of the central portion C is prevented by the resistance force generated by the shape of the both side edges, so that the central portion C is less likely to wrinkle.
Here, panty liners are generally thin compared to other absorbent articles such as sanitary napkins, and it is difficult to prevent wrinkling by increasing the thickness and using the rigidity. However, in this embodiment, by providing the first constricted portion 11 and the second constricted portion 12 and forming the side edges 17a, 17b of the center portion C in a convex shape outward in the lateral direction Y, it is possible to prevent wrinkling without increasing the thickness of the panty liner. This makes it possible to make the panty liner less likely to cause discomfort when worn due to wrinkling, and also suppresses the occurrence of a decrease in absorption performance due to wrinkling, thereby reducing the physical discomfort felt by the wearer.

In addition, because both side edges 17a, 17b of the central portion C are shaped to protrude outward in the lateral direction Y, the area of the central portion C appears visually larger, providing the wearer with a sense of security regarding the absorbent's performance, such as preventing side leakage. Moreover, because the area of the central portion C can actually be made larger, the absorbent's capacity for absorbing bodily fluids can be increased.

As shown in FIG. 1, in the panty liner 1, the maximum width a is narrower than the maximum width b in the front region 51 and the maximum width c in the rear region 53. In this way, by making the width (dimension in the horizontal direction Y) of the excretory part facing region 52, which is more likely to receive force from the wearer's legs, narrower than the widths of the front region 51 and the rear region 53, which are less likely to receive force from the wearer's legs compared to the excretory part facing region 52, it is possible to reduce discomfort when wearing the panty liner 1 compared to making the width of the excretory part facing region 52 wider. In addition, by making the maximum width b in the front region 51 and the maximum width c in the rear region 53 wider than the maximum width a of the excretory part facing region 52, it is possible to ensure a wide absorption area for the entire panty liner 1 and to increase the absorption capacity. Even if a large amount of bodily fluid is excreted at once, it is possible to deal with unintended liquid flow, giving the wearer a sense of security.

<Components>
Each of the components constituting the panty liner 1 will now be described.

[Absorber]
The absorbent body 4 extends in the longitudinal direction X and is disposed between the colored second sheet 5 and the back sheet 3. The absorbent body 4 absorbs bodily fluids from the skin side 4a and retains the bodily fluids by diffusing them internally. The absorbent body 4 is the component that has the highest absorption capacity among the components that make up the panty liner 1.

The absorbent body 4 may be a stack of fibers containing a fibrous material such as pulp fiber and containing superabsorbent polymer particles as necessary, an absorbent paper containing a fibrous material such as pulp fiber and containing superabsorbent polymer particles as necessary, or an absorbent sheet in which superabsorbent polymer particles are arranged between two sheets of absorbent paper.
Examples of fiber materials that can be used include natural fibers such as wood pulp, cotton, and hemp; monofilaments made of synthetic resins such as polyolefin resins such as polyethylene and polypropylene, polyester resins such as polyethylene terephthalate, and polyvinyl alcohol resin; composite fibers containing two or more of these resins; and semi-synthetic fibers such as acetate and rayon.
The highly absorbent polymer is preferably one that can absorb and retain 5 times or more of its own weight in bodily fluids and can gel. The shape of the highly absorbent polymer is not particularly limited, and it may be spherical, lumpy, grape-like, powdery, or fibrous. Examples of highly absorbent polymers include starch, crosslinked carboxymethylated cellulose, polymers or copolymers of acrylic acid or alkali metal salts of acrylic acid, polyacrylic acid and its salts, and polyacrylate graft polymers. As the polyacrylate, sodium salts can be preferably used. In addition, copolymers obtained by copolymerizing acrylic acid with comonomers such as maleic acid, itaconic acid, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, 2-(meth)acryloylethanesulfonic acid, 2-hydroxyethyl (meth)acrylate, or styrenesulfonic acid within a range that does not reduce the performance of the highly absorbent polymer can also be preferably used.

As shown in FIG. 2, the absorbent body 4 is composed of, for example, a fiber material 41 and a superabsorbent polymer 42. In the panty liner 1, the absorbent body 4 is a folded sheet-like absorbent sheet arranged to have a laminated structure of two or more layers, but it may be an absorbent body with a single layer structure without folding. The absorbent body 4 may also be an absorbent core made of stacked fiber material or an absorbent core that is a mixed stack of fibers carrying superabsorbent polymer particles, covered with a core wrap sheet.

In the panty liner 1, the topsheet 2, the colored second sheet 5 and the backsheet 3 have the same shape, and these overlap in a plan view to form the outer shape of the panty liner 1.
1 , in plan view, the absorbent body 4 is located within the area where the topsheet 2, the colored second sheet 5, and the backsheet 3 are present. The absorbent body 4 is present throughout the entire longitudinal area of the central portion C, and also in parts of the front portion F and the rear portion R.
The absorbent body 4 has a length in the longitudinal direction X shorter than those of the topsheet 2, the colored second sheet 5, and the backsheet 3, and a length in the transverse direction Y shorter than the narrowest widths of the topsheet 2, the colored second sheet 5, and the backsheet 3. In a plan view, the topsheet 2, the colored second sheet 5, and the backsheet 3 extend outward from the entire periphery of the absorbent body 4, and these extended regions are joined to each other by an adhesive, which will be described later. Furthermore, the extended regions are joined to each other by a peripheral joint 13, which is located inside the periphery of the panty liner 1 and is continuous around the entire periphery of the panty liner 1, and is formed by, for example, heat sealing.
In the panty liner 1, the absorbent body 4 has a rectangular shape in plan view with its long sides extending in the longitudinal direction X. However, the planar shape of the absorbent body 4 is not limited.

The panty liner 1 has compressed grooves such as horizontal leakage-prevention grooves 6, recessed portions 8, and vertical leakage-prevention grooves 7. The compressed grooves are formed by integrally depressing the top sheet 2 and the colored second sheet 5. The compressed grooves do not reach the absorbent body 4, and the entire skin side surface 4a of the absorbent body 4 is in an uncompressed state. The detailed structure of the compressed grooves will be described later.
"Non-compressed" includes not only forms that are not compressed at all, but also the following forms: When a top sheet 2 and a colored second sheet 5 having compressed grooves in which the top sheet 2 and the colored second sheet 5 are integrated are placed on top of the absorbent body 4, slight depressions due to the compressed grooves may occur on the surface of the absorbent body 4. Such forms are also included in "non-compressed". In such forms, the top sheet, the colored second sheet, and the absorbent body are not integrated by the compressed grooves, and the absorbent body and the colored second sheet can be easily separated.

Since the entire skin side 4a of the absorbent body 4 is in an uncompressed state, localized liquid pools due to high density compressed areas are not formed, and the absorbency of the absorbent body 4 can be effectively utilized throughout the entire surface. Furthermore, an increase in the rigidity of the absorbent body 4 is prevented, and differences in rigidity due to differences in the compressed state are eliminated, resulting in an absorbent body 4 with good liquid absorption and flexibility.
Furthermore, when the absorbent body 4 contains a superabsorbent polymer 42, by keeping the absorbent body 4 in a non-compressed state, it is possible to prevent the occurrence of inhibition of swelling of the superabsorbent polymer 42 contained in the absorbent body 4 due to the compression grooves, and it is possible to make the liquid absorption properties of the superabsorbent polymer 42 more effective.

[Top sheet]
The top sheet 2 is configured as a liquid-permeable sheet material, and is disposed above the colored second sheet 5 in the thickness direction Z.
The topsheet 2 constitutes the outer shape of the panty liner 1 .
As the topsheet 2, any topsheet that is commonly used in absorbent articles such as panty liners and sanitary napkins can be used without any particular limitation.
The top sheet 2 is composed of, for example, natural fibers such as cotton and hemp, monofilaments made of synthetic resins such as polyolefin resins such as polyethylene and polypropylene, polyester resins such as polyethylene terephthalate, and polyvinyl alcohol resins, composite fibers containing two or more of these resins, and semi-synthetic fibers such as acetate and rayon.

As shown in FIG. 1, the topsheet 2 may have a plurality of apertures 14. The apertures 14 are through-holes that penetrate the topsheet 2 in the thickness direction Z. In the example shown in FIG. 1, seven aperture rows 140, each of which has a plurality of apertures 14 arranged along the longitudinal direction X, are intermittently arranged along the transverse direction Y. The aperture row group consisting of the plurality of aperture rows 140 is arranged in the center of the topsheet 2 in the transverse direction Y, and is not arranged on either side. The plurality of aperture rows 140 are arranged over the entire length of the panty liner 1 in the longitudinal direction X, excluding both ends in the longitudinal direction X. In a plan view, the plurality of aperture rows 140 are located within an area surrounded by the peripheral joint 13, and are located inside the peripheral joint 13 of the panty liner 1, but not outside.
The multiple apertures 14 are arranged, for example, in a staggered pattern. The planar shape of the apertures 14 is not limited to the elliptical shape shown in Fig. 1, and may be, for example, a polygonal shape such as a triangle, a square, or a rectangle, or a star shape. Note that the apertures are not shown in the cross-sectional view of Fig. 2.

Providing a plurality of perforation rows 140 improves the downward migration of bodily fluids supplied to the topsheet 2. By forming the perforation rows 140 by arranging a plurality of perforations 140 along the longitudinal direction X, even when the excretion rate of bodily fluids is high, the bodily fluids are more likely to diffuse in the longitudinal direction X in the panty liner 1 whose dimension in the longitudinal direction X is longer than its dimension in the lateral direction Y, making it easier to prevent lateral leakage.
Furthermore, the dimension in the lateral direction Y of the group of hole rows 140 consisting of a plurality of hole rows 140 (seven rows in FIG. 1 ) is shorter than the dimension in the lateral direction Y of the absorbent body 4 and shorter than the dimension in the lateral direction Y of the lateral leakage-preventing grooves 6 described below. Recesses 8 described below, which are arranged on both sides of the lateral leakage-preventing grooves 6 in the lateral direction Y, do not overlap the hole rows 140 in plan view. In the excretory-part-facing region 52 of the panty liner 1, the hole rows 140 are located in the region where the absorbent body 4 is present in plan view, so that bodily fluids reach the absorbent body 4 when they migrate downward, making it easier to suppress lateral leakage in the lateral direction Y.

The top sheet 2 is configured so that when the panty liner 1 is viewed from the top sheet 2 side, the colored second sheet 5, which will be described later, can be seen through it. The top sheet 2 is, for example, white. Note that the color of the top sheet 2 is not limited to white, and it is sufficient that the color of the colored second sheet 5 can be seen through it when the panty liner 1 is viewed from the top sheet 2 side.

The skin side of the topsheet 2, i.e., the skin side 1a of the panty liner 1, is formed with compressed grooves, such as leakage-preventing horizontal grooves 6, recesses 8, and leakage-preventing vertical grooves 7, which are formed by compressing the topsheet 2 side in the thickness direction Z. The compressed grooves will be described later.

[Colored second seat]
The colored second sheet 5 is disposed between the top sheet 2 and the absorbent body 4. The colored second sheet 5 is a sheet that plays a role of promoting the attraction of body fluids from the top sheet 2, improving the permeability of body fluids to the absorbent body 4, and reducing the return of body fluids absorbed by the absorbent body 4 back to the top sheet 2.
The colored second sheet 5 is made of a water-absorbent material. The water absorbency can be evaluated by the Klemm method described in JIS P 8141 "Paper and paperboard - Water absorption test method." The Klemm water absorption height of the colored second sheet 5 is preferably 1 mm or more higher than the Klemm water absorption height of the top sheet 2, and more preferably 5 mm or more higher. The Klemm water absorption height of the top sheet 2 is preferably 1 mm or more and 20 mm or less. The Klemm water absorption height of the colored second sheet 5 is preferably 5 mm or more and 40 mm or less.
A hydrophilic nonwoven fabric or a hydrophilic fiber assembly can be used as the colored second sheet 5. Examples of the nonwoven fabric include an air-through nonwoven fabric, a point-bonded nonwoven fabric, a resin-bonded nonwoven fabric, a spunlace nonwoven fabric, and an air-laid nonwoven fabric. The colored second sheet 5 is formed by coloring a hydrophilic nonwoven fabric or a hydrophilic fiber assembly with, for example, a dye.

The colored second sheet 5 is larger than the absorbent body 4 in a plan view and is positioned so as to cover the absorbent body 4. In the panty liner 1 of this embodiment, the colored second sheet 5 has the same shape as the top sheet 2 and the back sheet 3, and is arranged on the entire surface of the panty liner 1. As a result, when the panty liner 1 is viewed in a plan view from the white top sheet 2 side, the entire surface of the panty liner 1 is visually recognized through the top sheet 2 in the color due to the colored second sheet 5. By visually recognizing the entire surface in the same color in this way, a sense of unity is created in the product, and the color reminds the wearer that the liquid concealment effect is provided, giving a sense of security. In addition, by arranging the water-absorbent colored second sheet 5 on the entire surface of the panty liner 1, it is possible to reduce the stuffiness of the entire panty liner 1 when sweat or body fluids from the wearer are supplied to the panty liner 1 while wearing it, and to reduce the discomfort of wearing it.

Here, "white" means a color having an L ^* value of 95 or more in the CIE-L ^* a ^* b ^* color system.
The term "colored" means not only excluding colorless transparency, but also excluding colors (white) having an L ^* value of 95 or more. In addition, in order to increase the hiding power of conventional absorbent articles, for example, the incorporation of an agent such as titanium oxide to make the article opaque and set the L ^* value to less than 95 is not included in the concept of colored in the present invention.
In this specification, the L ^* value, a ^* value, and b ^* value in the CIE-L ^* a ^* b ^* color system can be measured by a color difference meter. For example, they can be obtained by measuring the reflected light of the sheet using a handy spectrocolorimeter NF333 (product name) manufactured by Nippon Denshoku Industries Co., Ltd. under the measurement conditions of light source C and a viewing angle of 2°. At this time, it is preferable to measure using a white plate with an L ^* value of 95 or more as the background plate.

The color of the colored second sheet 5 is preferably a color that provides a visual liquid concealment effect, making the absorbed bodily fluid less noticeable to the wearer when the panty liner 1 is filled with bodily fluid after wearing. For example, the red color of menstrual blood is a warm color, so it is preferable to use a contrasting cool color such as green, light blue, or purple. This makes it difficult to see the color of menstrual blood when it adheres to the area of the panty liner 1 where the colored second sheet 5 is located in a plan view. This reduces the visual discomfort felt by the wearer.

The colored second sheet 5 may contain a functional agent capable of exerting a specific function, such as an antibacterial agent or a deodorant. A colored second sheet containing a functional agent can be produced, for example, by blending the functional agent during production.
By using an antibacterial agent and a deodorant, the unpleasant smell given to the wearer when wearing the garment can be reduced, and combined with the effect of reducing visual discomfort due to the color of the colored second sheet 5, the wearer is less likely to feel uncomfortable.
In addition, by arranging the colored second sheet 5 containing an antibacterial agent and a deodorant on the skin side of the absorbent body 4, which is the liquid-retaining layer, in the panty liner 1, it becomes easier to more effectively obtain a deodorizing effect against odors emanating from the body fluids retained in the absorbent body 4. This reduces the discomfort caused by odors, and, combined with the reduction in visual and physical discomfort, it is possible to further reduce the discomfort felt by the wearer.

Known antibacterial agents can be used. As the antibacterial agent, it is preferable to use an organic antibacterial agent. When the odor-causing substance in the excrement is organic, the organic antibacterial agent is expected to have high antibacterial and deodorizing properties due to its good affinity with the odor-causing substance. From the viewpoint of affinity with organic odor-causing substances and bacteria, organic cationic antibacterial agents are particularly preferable. Cationic antibacterial agents can suppress the generation of strong putrid odors as a control for the production of malodors. For this reason, in this specification, antibacterial agents are a concept included in deodorant agents.
Cationic antibacterial agents are organic compound-based antibacterial agents, which dissolve more into excretions such as urine and have a wider range of antibacterial effects than metal ion-based agents such as silver, zinc, and copper. In particular, quaternary ammonium salts such as didecyldimethylammonium salts, alkylpyridinium salts, benzethonium salts, benzalkonium salts, monoalkyltrimethylammonium salts, and dialkyldimethylammonium salts are included, and it is preferable to contain at least one selected from the group consisting of these. These cationic antibacterial agents may be used alone or in combination of two or more.

The deodorant is a substance that directly acts on odors, i.e., adsorbs, neutralizes, decomposes odors, and exerts a deodorizing effect, and can be used as a substance that is widely used for deodorizing purposes in the technical field. Porous deodorant granules are preferable because they have a wide deodorizing spectrum for odors. Examples of porous deodorant granules include inorganic deodorant granules and organic deodorant granules. Inorganic deodorant granules are deodorant granules that are mainly made of inorganic compounds, that is, deodorant granules whose skeleton compound is an inorganic compound. Organic deodorant granules are deodorant granules that are mainly made of organic compounds, that is, deodorant granules whose skeleton compound is an organic compound.
In this way, by using a deodorant in addition to an antibacterial agent, the generation of bad odors can be further suppressed.
Preferable inorganic deodorant granules include cancrinite-like minerals, zeolite, montmorillonite, activated carbon, etc. Among these, porous deodorant granules having polarity are preferred because they are suitable for deodorizing water-soluble odor-causing substances, and cancrinite-like minerals and zeolite are more preferred because they have a wide deodorant spectrum. Note that activated carbon is non-polar, so it is effective for deodorizing organic odor components, and examples of such materials include coconut shell charcoal, charcoal, bicarbonate coal, peat, and lignite.
Preferred organic deodorant granules include particles obtained by copolymerizing a monomer component containing a crosslinkable vinyl monomer and a vinyl monomer having a heteroaromatic ring.

[Back sheet]
The backsheet 3 is disposed below the absorbent body 4 in the thickness direction Z. The non-skin side of the backsheet 3 constitutes the non-skin side 1 b of the panty liner 1 .
The backsheet 3 constitutes the outer shape of the panty liner 1 .
As the back sheet 3, any sheet that is commonly used in absorbent articles such as panty liners and sanitary napkins can be used without any particular limitation.
The back sheet 3 is formed of, for example, a sheet material having functions such as poor liquid permeability, water vapor permeability, water repellency, etc. As the sheet material, for example, a thermoplastic resin film or a laminate of the film and a nonwoven fabric can be used.
An adhesive portion (not shown) is provided on the non-skin side of the backsheet 3 for fixing the panty liner 1 to clothing.

[Compression groove]
As described above, the skin side surface of the topsheet 2, i.e., the skin side surface 1a of the panty liner 1, is formed with compressed grooves such as the leakage-preventing horizontal grooves 6, recesses 8 and leakage-preventing vertical grooves 7 by compressing in the thickness direction Z from the topsheet 2 side (see Figures 1 and 2). The compressed grooves can be formed in the usual manner by compressing with or without heat, or by embossing such as ultrasonic embossing.

As shown in FIG. 2, the compressed grooves such as the leakage prevention horizontal grooves 6, the recessed portion 8, and the leakage prevention vertical grooves 7 (not shown in FIG. 2) have a recessed configuration formed by compressing the top sheet 2 and the colored second sheet 5 together toward the non-skin side 1b (back sheet 3 side) of the panty liner 1. The compressed grooves do not reach the absorbent body 4.

In the panty liner 1, the compressed grooves such as the leakage prevention horizontal grooves 6, the recessed portions 8, and the leakage prevention vertical grooves 7 do not reach the absorbent body 4 in the thickness direction Z, and therefore have a lower fiber density and lower rigidity than compressed grooves formed by compressing the top sheet, the colored second sheet, and the absorbent body together (hereinafter sometimes referred to as "compressed grooves that reach the absorbent body"). For this reason, in the compressed grooves such as the leakage prevention horizontal grooves 6, the recessed portions 8, and the leakage prevention vertical grooves 7 in the panty liner 1, the color of menstrual blood, etc. tends to be darker than in other non-compressed areas, but compared to compressed grooves that reach the absorbent body, the color of bodily fluids is less noticeable, and is less likely to cause visual discomfort to the wearer.

Next, each compression groove will be described.
(Leak-proof groove)
As shown in FIG. 1, in plan view, a pair of leakage-preventing lateral grooves 6 are disposed in the front and rear of the excretory part-facing region 52 of the panty liner 1 .
Of the pair of front and rear lateral leakage prevention grooves 6, the one located at the front is referred to as the front lateral leakage prevention groove 6a, and the one located at the rear is referred to as the rear lateral leakage prevention groove 6b.

The front leakage prevention horizontal groove 6a extends in the horizontal direction Y and has a convex shape that protrudes forward. In the example shown in Fig. 1, the front leakage prevention horizontal groove 6a has a gentle arc shape that protrudes outward in the vertical direction X of the panty liner 1, but is not limited to this. For example, it may have an inverted V shape, or any other convex shape that protrudes forward. The front leakage prevention horizontal groove 6a is located in the front portion F.
The rear leakage prevention horizontal groove 6b extends in the horizontal direction Y and has a convex shape protruding toward the rear. In the example shown in Fig. 1, the rear leakage prevention horizontal groove 6b has a gentle arc shape protruding outward in the vertical direction X of the panty liner 1, but is not limited to this. For example, it may be V-shaped, or may have a convex shape protruding toward the rear. The rear leakage prevention horizontal groove 6b is located in the rear portion R.

The leakage-preventing horizontal groove 6 is a linear shape that can be regarded as a continuous line as a whole, with a plurality of intermittently arranged compressed recesses 60. In this embodiment, the plurality of compressed recesses 60 have different planar shapes, and the leakage-preventing horizontal groove 6 as a whole has a shape in which the width is greatest in the central region in the longitudinal direction of the leakage-preventing horizontal groove 6 and the width gradually decreases toward the ends.
The "continuous" linear shape of the leakage-preventing groove 6 includes a shape in which the leakage-preventing groove is formed by a continuous linear compressed recess, and a shape in which the leakage-preventing groove is formed by a collection of a row of discontinuous compressed recesses as in this embodiment, and can be regarded as a continuous line as a whole. The leakage-preventing groove 6 may be formed by one continuous linear compressed recess. Note that in Figures 4 and 7, the shape of the leakage-preventing groove 6 is simplified and illustrated as an arc formed by a continuous linear shape.
The term "linear" in the lateral leakage preventing grooves 6 is not limited to a linear shape in a plan view, but also includes a curved shape.
"Extending in the horizontal direction Y" does not necessarily mean completely parallel to the horizontal direction Y, but may mean extending from the right side to the left side. Similarly, "extending in the vertical direction X" does not necessarily mean completely parallel to the vertical direction X, but may mean extending from the front to the rear.

The leakage-preventing horizontal grooves 6 have a higher fiber density than the surrounding uncompressed areas, so they can absorb and retain excreted body fluids by capillary action. The pair of front and rear leakage-preventing horizontal grooves 6 have a leakage-preventing effect that suppresses the diffusion of body fluids in the vertical direction X of the panty liner 1 and prevents fluid from leaking outward in the vertical direction X.

The protruding tips of the front leakage prevention horizontal grooves 6a and the rear leakage prevention horizontal grooves 6b are located within the absorbent body 4. That is, in a plan view, the pair of front and rear leakage prevention horizontal grooves 6 are located within the area where the absorbent body 4 is located, and further, are located within the area where the colored second sheet 5, which is arranged to cover the absorbent body 4, is located.

The pair of front and rear horizontal leakage prevention grooves 6 are more likely to pool liquid than the surrounding unsqueezed areas, but because the leakage prevention grooves 6 do not reach the absorbent body 4 in the thickness direction Z, they have a lower fiber density and are less likely to pool liquid than leakage prevention grooves that reach the absorbent body, and they are also less rigid. This improves the flexibility of the panty liner 1, making it less uncomfortable to wear, and also makes it less noticeable the color of bodily fluids caused by fluid pooling in the leakage prevention grooves 6. Furthermore, because the pair of front and rear horizontal leakage prevention grooves 6 are located within the colored second sheet 5 in a plan view, the color of bodily fluids caused by fluid pooling is even less noticeable.

The pair of leakage-preventing horizontal grooves 6 are positioned so as to almost surround the absorbent body 4 from the front to the rear. The pair of leakage-preventing horizontal grooves 6 on the front and rear sides each have a convex shape facing outward in the longitudinal direction X of the panty liner 1. Therefore, even if bodily fluids diffuse in the longitudinal direction X and reach the leakage-preventing horizontal grooves 6, the leakage-preventing horizontal grooves 6 can stop the bodily fluids and return them inward in the longitudinal direction X while diffusing them in the transverse direction Y, making it easier to concentrate the bodily fluids in the center of the panty liner 1. The pair of leakage-preventing horizontal grooves 6 are positioned on the absorbent body 4 in a plan view, so that the range of liquid diffusion in the longitudinal direction X can be easily contained within the absorbent body 4, which is a liquid-retaining layer, and the liquid-absorbency of the panty liner 1 can be improved.

Furthermore, in the panty liner 1, the absorbent body 4 has a higher absorption capacity than the colored second sheet 5, so liquid transfer to the absorbent body 4 is promoted even if the compressed grooves including the leakage-preventing horizontal grooves do not reach the absorbent body.
That is, the top sheet 2 and the colored second sheet 5 have compressed grooves that recess them together, which promote the transfer of bodily fluids from the wearer supplied to the top sheet 2 to the colored second sheet 5. The absorbent body 4 has the largest absorption capacity of all the components constituting the panty liner 1, and the absorption capacity gradient between the absorbent body 4 and the colored second sheet 5 promotes the transfer of bodily fluids from the colored second sheet 5 to the absorbent body 4. Thus, fluid transfer to the absorbent body 4 is efficient, and the liquid absorbency of the panty liner 1 can be improved.

In this way, bodily fluids from the wearer are mainly retained by the absorbent body 4, and the colored second sheet 5 is positioned above the absorbent body 4 so as to cover it. When the wearer looks at the panty liner 1 from the top sheet 2 side, the colored second sheet 5 is positioned in front of the absorbent body 4 where the bodily fluids are mainly retained, making it difficult to visually recognize the presence of bodily fluids, thereby reducing visual discomfort.

The relative positions of the pair of front and rear leak-proof horizontal grooves 6, the first imaginary line 21, the second imaginary line 22, the first individual packaging fold line 31, and the second individual packaging fold line 32 will be described later.

(Leak-proof vertical groove)
1 , in a plan view, a pair of leakage preventing vertical grooves 7 are disposed on the left and right in the center in the longitudinal direction X of the excretory part facing region 52 of the panty liner 1. Each of the pair of left and right leakage preventing vertical grooves 7 extends continuously in the longitudinal direction X. Each of the pair of left and right leakage preventing vertical grooves 7 has a gentle arc shape that protrudes outward in the lateral direction Y of the panty liner 1.
The leakage preventing vertical grooves 7 are located laterally outward of both left and right side edges along the longitudinal direction X of the absorbent body 4. The leakage preventing vertical grooves 7 are shaped so that their width is greatest in the central region in the longitudinal direction and gradually decreases toward the ends.

The pair of left and right leakage prevention vertical grooves 7 have a higher fiber density than the surrounding areas, so they can absorb and retain excreted body fluids by capillary action. As a result, the pair of left and right leakage prevention vertical grooves 7 also have a leakage prevention effect that prevents leakage of body fluids (lateral leakage) outward in the lateral direction Y of the absorbent body 4. In this embodiment, the pair of left and right leakage prevention vertical grooves 7 each have a gentle arc shape that protrudes outward in the lateral direction Y of the panty liner 1. Therefore, even if body fluids diffuse in the lateral direction Y and reach the leakage prevention vertical grooves 7, the leakage prevention vertical grooves 7 can block the body fluid and return it inward in the lateral direction Y while diffusing it in the longitudinal direction X. This further suppresses lateral leakage in the center C.

The pair of left and right leakage-prevention vertical grooves 7 are more rigid than other non-compressed areas and are less likely to deform. Therefore, when the panty liner 1 is worn and receives an external force from the lateral direction Y, the pair of left and right leakage-prevention vertical grooves 7 can function as deformation starting points that promote deformation of the surrounding low-rigidity areas and as areas that exert resistance against the external force. This weakens the external force transmitted to the absorbent body 4 in the central portion C, suppressing the occurrence of undesirable deformation of the absorbent body 4, such as kinking, and maintaining good absorption performance of the panty liner 1.

The pair of left and right leakage prevention vertical grooves 7 are formed in an arc shape so as to roughly follow the shape of the convex shaped portions 15 on both left and right side edges at the center C of the panty liner 1. In this way, by making the convex direction of the convex shaped portions 15 on both left and right side edges at the center C of the panty liner 1 the same as the convex direction of the pair of left and right arc-shaped leakage prevention vertical grooves 7, the shape retention of the leakage prevention vertical grooves 7 is improved. Even when an external force is applied to the panty liner 1 from the lateral direction Y when worn, the shape of the leakage prevention vertical grooves 7 is not easily distorted, and the leakage prevention effect can be effectively achieved. In addition, by forming the leakage prevention vertical grooves 7 so as to roughly follow the shape of the convex shaped portions 15, deformation of the center C due to an external force applied by the wearer when worn is prevented by the resistance force generated by the shape of the pair of left and right leakage prevention vertical grooves 7, so that the center C is more unlikely to wrinkle.

(Recessed portion)
As shown in Fig. 1, in plan view, one recess 8 is provided on each of the left and right sides of the front horizontal leakage prevention groove 6a located in the front portion F, and one on each of the left and right sides of the rear horizontal leakage prevention groove 6b located in the rear portion R. Each of the pair of left and right recesses located in the front portion F is referred to as a front recess 8a. Each of the pair of left and right recesses located in the rear portion R is referred to as a rear recess 8b. When there is no particular need to distinguish between the two, they are referred to as recesses 8.

The pair of left and right front recesses 8a are positioned in contact with the left and right side portions 44a and 44b (the left side portion 44a and the right side portion 44b) of the front end region 43a of the absorbent body 4, respectively.
The pair of left and right rear recesses 8b are positioned so that at least a portion thereof contacts the left and right side portions 44a and 44b of the rear end region 43b of the absorbent body 4, respectively.
In other words, in this embodiment, the absorbent body 4 has a rectangular planar shape, and each of the four corners of the absorbent body 4 is at least partially in contact with each of the four recesses 8. Each of the four corners of the absorbent body 4 and each of the four recesses 8 are positioned to overlap in a planar view.
By positioning each of the four recesses 8 extending in the longitudinal direction X in contact with each of the four corners of the absorbent body 4, the diffusion of bodily fluids in the lateral direction Y can be further suppressed, thereby preventing lateral leakage.

Each recess 8a has a shape that extends continuously in the vertical direction X. Each recess 8 has an arc shape that protrudes inward in the horizontal direction Y of the panty liner 1.

<Positional Relationship of Leak-Proof Horizontal Groove, First and Second Virtual Lines, and First and Second Individual Packaging Folding Lines>
In the panty liner 1, the pair of front and rear horizontal leakage-preventing grooves 6 do not cross the first imaginary line 21 and the second imaginary line 22 in a plan view.
The "not straddling" form includes a form in which the first and second imaginary lines do not overlap the horizontal leakage-prevention groove 6 at all in plan view, as well as a form in which the first and second imaginary lines 21 and 22 contact the horizontal leakage-prevention groove 6 at a point. For example, a form in which the tip of the convex part of the horizontal leakage-prevention groove 6 contacts the imaginary line 21 or 22 at one point in plan view, and a form in which both ends of the linear horizontal leakage-prevention groove 6 contact the imaginary line 21 or 22, i.e., a form in which they contact at two points, are also included.

The first constricted portion 11 and the second constricted portion 12 have the function of reducing the influence of stress propagated in the vertical direction X via the side edges, etc. of the panty liner 1, and suppressing the occurrence of twisting of the panty liner 1. For this reason, the positions of the first imaginary line 21 and the second imaginary line 22 are more susceptible to stress and deformation than other areas before and after them.
In the panty liner 1, the leakage preventing lateral grooves 6 are arranged so as not to straddle the first imaginary line 21 and the second imaginary line 22 which are susceptible to this stress, thereby making it possible to prevent the shape of the leakage preventing lateral grooves 6 from collapsing and to improve the shape retention of the leakage preventing lateral grooves 6. This makes it possible to improve the flexibility of the panty liner 1 by forming compressed grooves that do not reach the absorbent body, while improving the shape retention of the leakage preventing lateral grooves 6, and the leakage preventing function of the leakage preventing lateral grooves 6 can be efficiently exhibited.

In addition, in the panty liner 1, the leakage preventing grooves 6 are arranged so as not to straddle the first individual packaging fold line 31 and the second individual packaging fold line 32. This suppresses deformation of the leakage preventing grooves 6 due to the individual packaging fold lines 31 and 32, improves the shape retention of the leakage preventing grooves 6, and prevents the leakage preventing grooves 6 from unintentionally collapsing when the individual package is opened. Therefore, the leakage preventing function of the leakage preventing grooves 6 can be efficiently exhibited in the panty liner 1 when worn.
The "not straddling" form includes a form in which the first individual packaging fold line 31 and the second individual packaging fold line 32 do not overlap the horizontal leakage-prevention groove 6 at all in plan view, as well as a form in which the individual packaging fold line 31 or 32 contacts the horizontal leakage-prevention groove 6 at a point. For example, a form in which the tip of the convex part of the horizontal leakage-prevention groove 6 contacts the individual packaging fold line 31 or 32 at one point in plan view, and a form in which both ends of the linear horizontal leakage-prevention groove 6 contact the individual packaging fold line 31 or 32, i.e., a form in which they contact at two points, are also included.

In this way, in the panty liner 1, the leakage preventing grooves 6 are not positioned across either the first and second individual packaging fold lines 31 and 32 or the first and second imaginary lines 21 and 22, improving the shape retention of the leakage preventing grooves 6. This allows the leakage preventing function to be efficiently exerted, and the presence of the highly rigid leakage preventing grooves 6 suppresses deformation of the panty liner 1, maintaining good liquid absorption properties.

In addition, in an individually packaged panty liner 10 in which the panty liner 1 is folded in thirds in the vertical direction, at least one of the pair of front and rear horizontal leakage prevention grooves 6 is located between at least one of the first imaginary line 21 and the second imaginary line 22 and the individual packaging fold line. As shown in Fig. 1, by folding in thirds, in the individually packaged panty liner 10, the front horizontal leakage prevention groove 6a is located between the first imaginary line 21 and the first individual packaging fold line 31. The rear horizontal leakage prevention groove 6b is located outside the second imaginary line 22 and the second individual packaging fold line 32 on the rear region 53 side in the vertical direction X. In addition, in the individually packaged panty liner 10, the front horizontal leakage prevention groove 6a and the rear horizontal leakage prevention groove 6b do not overlap each other in a plan view. If the front lateral leakage prevention groove 6a and the rear lateral leakage prevention groove 6b are individually packaged so as to overlap each other in a plan view, when a force is applied in the lateral direction Y to the individually packaged panty liner 10 at a position where the lateral leakage prevention grooves are present, the shape of both of the pair of lateral leakage prevention grooves 6 may be distorted. In contrast, by individually packaging the front lateral leakage prevention groove 6a and the rear lateral leakage prevention groove 6b so as not to overlap each other in a plan view, the possibility of both of the pair of lateral leakage prevention grooves 6 losing their shape can be reduced.
By individually packaging the container in the manner described above, the shape of the leakage-preventing horizontal groove 6 can be made even less prone to collapse, and it is possible to prevent the leakage-preventing horizontal groove 6 from unintentionally collapsing when the individual package is opened.

1 , the front leakage prevention horizontal groove 6a is located in the excretory part facing region 52, in the region where the absorbent body 4 is located. The front leakage prevention horizontal groove 6a is located in the region between the first individual packaging fold line 31 and the first imaginary line 21. The front leakage prevention horizontal groove 6a is located in the vicinity of the first individual packaging fold line 31.
The first individual packaging fold line 31 is located at the same position as an imaginary horizontal line 34 extending parallel to the horizontal direction Y passing through the front tip portion of the absorbent body 4. The first individual packaging fold line 31 is located at the boundary between an area of the panty liner 1 where the absorbent body 4 is located and an area where the absorbent body 4 is not located.

On the other hand, the rear leakage prevention horizontal groove 6b is located in the excretory part facing region 52, and is located within the region where the absorbent body 4 is located. The rear leakage prevention horizontal groove 6b is located outward in the vertical direction X from the second individual packaging fold line 32. The rear leakage prevention horizontal groove 6b is located near the second individual packaging fold line 32. The second individual packaging fold line 32 is in the same position as the second virtual line 22.

When worn, if force is applied inward in the lateral direction Y from both legs of the wearer to the middle portion C located in the excretory portion facing region 52 of the panty liner 1, the pair of first constrictions 11 and the pair of second constrictions 12 become the starting points for easing wrinkles, and wrinkles are likely to occur in the front portion F and the rear portion R extending in the longitudinal direction X from the first imaginary line 21 and the second imaginary line 22, and the front leakage prevention horizontal grooves 6a and the rear leakage prevention horizontal grooves 6b may wrinkle starting from these wrinkles.
1, in the panty liner 1 of this embodiment, the front leakage prevention horizontal groove 6a is located inward in the longitudinal direction X (toward the excretory part facing region) from a position 36 in the front region 51 having the same width as the maximum width part a of the excretory part facing region 52, and is located outward in the longitudinal direction X (toward the front end portion in the longitudinal direction X) from the first imaginary line 21. In this way, by arranging the front leakage prevention horizontal groove 6a on the absorbent body 4 in the region where the above-mentioned wrinkles are likely to occur, it becomes easier to prevent the front leakage prevention horizontal groove 6a from collapsing and losing its shape due to the above-mentioned wrinkles when worn.
The same is true for the rear leakage prevention horizontal groove 6b. The rear leakage prevention horizontal groove 6b is located inward in the longitudinal direction X (toward the excretory part facing region) from a position 37 in the rear region 53 having the same width as the maximum width part a of the excretory part facing region 52, and is located outward in the longitudinal direction X (toward the front end portion in the longitudinal direction X) from the second imaginary line 22. In this way, by arranging the rear leakage prevention horizontal groove 6b on the absorbent body 4 in the region where wrinkles are likely to occur, it becomes easier to prevent the rear leakage prevention horizontal groove 6b from collapsing and losing its shape due to the wrinkles when worn.

As described above, in the panty liner 1, the leak-preventing horizontal grooves 6 that do not reach the absorbent body 4, the colored second sheet 5 that covers the absorbent body 4, and the absorption capacity gradient between the colored second sheet and the absorbent body improve the visual liquid concealment, and the leak-preventing horizontal grooves 6 are provided so as not to cross the imaginary line connecting the pair of constrictions and the individual packaging fold line, improving the shape retention of the leak-preventing horizontal grooves 6 and effectively suppressing the occurrence of undesirable deformations such as wrinkling. This reduces visual and physical discomfort felt by the wearer.

<Positional Relationship of Recessed Portion, First and Second Virtual Lines, and First and Second Individual Packaging Folding Lines>
Each recess 8 has an arc shape that extends continuously in the longitudinal direction X and protrudes inward in the lateral direction Y of the panty liner 1 .

In a plan view, the front recess 8a is located between the first individual packaging fold line 31 and the first imaginary line 21. The front recess 8a is located so as not to straddle either the imaginary line or the individual packaging fold line, and similarly to the leakage-preventing horizontal groove 6, the shape of the front recess 8a is unlikely to collapse.
In the panty liner 1, one end of each of the pair of front recesses 8a is located on or near the first imaginary line 21, and in the example shown in Fig. 1, they are located near the first imaginary line 21. The other end of each of the pair of front recesses 8a is located on or near the first individual packaging fold line 31, and in the example shown in Fig. 1, they are located on the first individual packaging fold line 31. One end of the front recesses 8a is located near the first constricted portion 11. By having the highly rigid front recesses 8a located near the first constricted portion 11, twisting of the side edges of the panty liner 1 near the first constricted portion 11 is easily suppressed.

In a plan view, the rear recess 8b is located between an imaginary horizontal line 35 extending parallel to the horizontal direction Y passing through the rear tip end of the absorbent body 4, and the second individual packaging fold line 32 and the second imaginary line 22 which are located at the same position as each other. The rear recess 8b is located so as not to straddle either the individual packaging fold line or the imaginary line, and similarly to the leakage-preventing horizontal groove 6, the shape of the rear recess 8b is unlikely to collapse.
In the panty liner 1, one end of each of the pair of rear recesses 8b is located on or near the second imaginary line 22, and in the example shown in Fig. 1, they are located in the vicinity. The other end of each of the pair of rear recesses 8b is located on or near the imaginary horizontal line 35, and in the example shown in Fig. 1, they are located on the imaginary horizontal line 35. One end of each rear recess 8b is located in the vicinity of the second constricted portion 12. By having the highly rigid rear recesses 8b located in the vicinity of the second constricted portion 12, twisting of the side edges of the panty liner 1 near the second constricted portion 12 is easily suppressed.

The pair of front recesses 8a are arranged on both sides in the lateral direction Y with the front leakage prevention lateral groove 6a in between, so that when an external force directed inward in the lateral direction Y is applied to the panty liner 1, the presence of the front recesses 8a can reduce the force acting on the front leakage prevention lateral groove 6a, improving the shape retention of the front leakage prevention lateral groove 6a. Furthermore, as described above, the pair of front recesses 8a are configured so that their shape is less likely to collapse, so that the shape retention of the front leakage prevention lateral groove 6a can be further improved. The same can be said for the rear recesses 8b.

<Adhesive>
In the panty liner 1, the top sheet 2 and the colored second sheet 5 are joined together by a first adhesive S1 disposed therebetween.
The colored second sheet 5 and the absorbent body 4 are joined together by a second adhesive S2 disposed therebetween.
The absorbent body 4 and the backsheet 3, and the backsheet 3 and the colored second sheet 5 are bonded together by a third adhesive S3 disposed therebetween.
In the absorbent body 4 having a laminated structure, the layers are bonded together by a fourth adhesive S4 disposed between the layers, thereby improving the shape retention of the absorbent body 4.
Each adhesive will be described below.

[First adhesive S1]
3, the coated area 71 of the first adhesive S1 disposed between the topsheet 2 and the colored second sheet 5 is formed over the entire surfaces of the topsheet 2 and the colored second sheet 5. In other words, the first adhesive S1 covers the entire interface between the topsheet 2 and the colored second sheet 5.

The coating pattern of the first adhesive S1 is an intermittent coating pattern that includes a mixture of coated sections 76 to which the first adhesive S1 is applied and uncoated sections 77. The coated area 71 of the first adhesive S1 means the area in which the first adhesive S1 is present and may include uncoated sections 77, and the same applies to the second adhesive S2, third adhesive S3, and fourth adhesive S4 below.
By applying the first adhesive S1 in an intermittent application pattern, the flexibility at the interface between the top sheet 2 and the colored second sheet 5 is increased, and the occurrence of inhibition of liquid passage due to the adhesive is suppressed, resulting in a panty liner 1 that maintains good liquid absorbency and allows body fluids to transfer effectively to the absorbent body 4.
Examples of intermittent coating patterns include spiral, summit, omega, and stripe patterns, and similar intermittent coating patterns can be used for the second adhesive S2, third adhesive S3, and fourth adhesive S4 below.

It is preferable to use a hydrophobic adhesive for the first adhesive S1. This makes it difficult for bodily fluids to remain on the top sheet 2, and improves the visual liquid concealment. Furthermore, since the first adhesive S1 is formed over the entire surface and the top sheet 2 is unlikely to float from the colored second sheet 5, bodily fluids absorbed by the top sheet 2 are easily transferred to the colored second sheet 5, and combined with the suppression of liquid remaining on the top sheet 2 by using a hydrophobic adhesive, the liquid transfer to the colored second sheet 5 can be improved. Furthermore, since the first adhesive S1 is formed over the entire surface, the colored second sheet 5 is easily deformed in accordance with the deformation of the top sheet 2 that touches the wearer's skin when worn, and twisting at the interface between the top sheet 2 and the colored second sheet 5 is suppressed, thereby reducing the physical discomfort felt when worn.
For the first adhesive S1 as the first hydrophobic adhesive, for example, SBS-based, SEBS-based, olefin-based hot melt, or the like can be used.

[Second adhesive S2]
4, the coated region 72 of the second adhesive S2 disposed between the colored second sheet 5 and the absorbent body 4 is located in a part of the region where the colored second sheet 5 and the absorbent body 4 overlap in a plan view. In other words, the second adhesive S2 covers non-entire surface of the interface between the colored second sheet 5 and the absorbent body 4. Furthermore, the second adhesive S2 is located between a pair of front and rear lateral leakage preventing grooves 6 in a plan view, and does not overlap with the lateral leakage preventing grooves 6. In the example shown in the figure, the coated region 72 of the second adhesive S2 is a band-like region extending in the longitudinal direction X at the longitudinal center of the lateral center of the absorbent body 4 in the transverse direction Y.

Although the coated area 72 of the second adhesive S2 is partial within the plane, the presence of the top sheet 2 above the colored second sheet 5 makes it difficult for the colored second sheet 5 as a whole to float off the absorbent body 4. As described above, the absorbent body 4 is made of a material that has the highest absorption capacity among the materials that make up the panty liner 1, so that the gradient of absorption capacity makes it easy for liquid to transfer from the colored second sheet 5 to the absorbent body 4.
In this way, partial application of the second adhesive S2 suppresses the occurrence of inhibition of liquid passage due to the adhesive. Furthermore, since the colored second sheet 5 is not easily lifted from the absorbent body 4 and there is a gradient in absorption capacity between the colored second sheet 5 and the absorbent body 4 that are adjacent to each other, liquid transfer from the colored second sheet 5 to the absorbent body 4 is favorable, and the panty liner 1 can be provided with favorable liquid absorbency.

The coating pattern of the second adhesive S2 is an intermittent coating pattern that includes a mixture of coated areas 76 where the second adhesive S2 is applied and uncoated areas 77 where the second adhesive S2 is not applied, similar to the first adhesive S1. By using an intermittent coating pattern, the flexibility of the interface between the colored second sheet 5 and the absorbent body 4 is increased, and the occurrence of inhibition of liquid passage due to the adhesive is suppressed, resulting in good liquid permeability.

It is preferable to use a hydrophobic adhesive for the second adhesive S2. This makes it difficult for body fluids to remain on the colored second sheet 5, and combined with the improvement in liquid absorption by partially providing the second adhesive S2 in the plane and the improvement in liquid transfer by providing a gradient in absorption capacity between the colored second sheet 5 and the absorbent body 4, it is possible to make it easier for body fluids to transfer to the absorbent body 4. This allows most of the colored body fluids, such as blood, to be retained in the absorbent body 4. Therefore, when the wearer looks at the panty liner 1 from the top sheet 2 side, the colored second sheet 5 is located in front of the absorbent body 4, where the body fluids are mainly retained, making it difficult to visually recognize the presence of body fluids, and improving visual liquid concealment.
For the second adhesive S2 as the second hydrophobic adhesive, for example, SBS-based, SEBS-based, olefin-based hot melt, etc. can be used.

Furthermore, by disposing the second adhesive S2 not on the entire surface but in the center in the lateral direction Y of the absorbent 4, both side portions in the lateral direction Y of the absorbent 4 are not fixed by adhesive, have lower rigidity than the areas where adhesive is disposed, and can move flexibly, albeit with small movements. As a result, when wearing the panty liner 1, the stiffness resulting from the rigidity of the absorbent 4 is less felt, making it less likely that the wearer will feel uncomfortable when wearing it.
Here, for example, if the second adhesive S2 is applied over the entire surface of the absorbent body in a plan view, the difference in rigidity between the area where the absorbent body 4 is located and the area where it is not located in the panty liner in a plan view will be large.
On the other hand, in the present embodiment, the second adhesive S2 is disposed in a part of the region where the absorbent 4 is located in a plan view, so that the stiffness difference between the region where the second adhesive S2 is disposed and the region where the second adhesive S2 is not disposed in the region where the absorbent 4 is located in a plan view in the panty liner 1, and the stiffness difference between the region where the absorbent 4 is located and the second adhesive S2 is not disposed and the region where the absorbent 4 is not located in a plan view, can be made smaller than the stiffness difference when the above-mentioned second adhesive S2 is disposed over the entire surface of the absorbent in a plan view. Since the greater the stiffness difference, the more likely it is that the wearer feels uncomfortable, so that the stiffness difference is reduced by disposing the second adhesive S2 over a non-entire surface and making both side portions of the absorbent 4 flexible as in the present embodiment, making it possible to make the wearer feel less uncomfortable and reduce bodily discomfort.

The second adhesive S2 disposed between the colored second sheet 5 and the absorbent body 4 is not positioned so as to overlap the horizontal leakage preventing grooves 6 in a plan view.
Therefore, the interface between the absorbent body 4 and the colored second sheet 5 located directly below the horizontal leakage preventing grooves 6 is in a state in which the absorbent body 4 and the colored second sheet 5 are not fixed and can move flexibly. This prevents so-called liquid return, in which bodily fluids once absorbed by the absorbent body 4 return to the top sheet 2 side due to pressure from the wearer, etc., when worn.
Therefore, the liquid retention ability of the absorbent body 4 is improved, and the colored second sheet 5 placed on the absorbent body 4 can effectively mask the color of the body fluids retained by the absorbent body 4, improving the liquid concealment ability and further reducing visual discomfort.
Furthermore, when the highly rigid absorbent body is twisted, since the absorbent body 4 is not fixed to the colored second sheet 5 directly below the horizontal leakage preventing grooves 6, the colored second sheet 5 is less likely to follow the deformation of the absorbent body 4 and is more likely to exhibit a restoring force to return to its original state. Therefore, even if the absorbent body is twisted, the top sheet 2, which follows the absorbent body and is integrated with the colored second sheet 5 by the horizontal leakage preventing grooves 6, is less likely to twist.

In addition, by not placing the second adhesive S2 directly below the horizontal leakage prevention grooves 6 where liquid is likely to pool, the transfer of liquid from the colored second sheet 5 to the absorbent body 4 is not impeded, improving the liquid concealment ability in the leakage prevention grooves, where liquid generally pools and makes the color of bodily fluids appear darker.

The second adhesive S2 is applied not all over the absorbent 4 but only partially, and the absorbent 4 has a portion that is not fixed to the colored second sheet 5 and can move flexibly at the interface with the colored second sheet 5, in addition to the portion directly below the horizontal leakage prevention grooves 6. This prevents liquid from flowing back even in areas where the horizontal leakage prevention grooves 6, where liquid pooling is likely to occur, are not located, and the absorbent 4 is more likely to effectively retain liquid, improving liquid concealment.

[Third adhesive S3]
As shown in Fig. 5, the coating area 73 of the third adhesive S3 disposed between the absorbent 4 and the backsheet 3 and between the colored second sheet 5 and the backsheet 3 is formed over the entire surface of the backsheet 3. In Fig. 5, a first area 61 indicated by diagonal lines is an area in the panty liner 1 where the absorbent 4 and the backsheet 3 overlap in a plan view. A second area 62 in the panty liner 1, which is an area other than the first area 61, is an area where the absorbent 4 is not located.
In the first region 61, the absorbent 4 and the backsheet 3 are joined by the third adhesive S3. In the second region 62, the colored second sheet 5 and the backsheet 3 are joined by the third adhesive S3. That is, the third adhesive S3 covers the entire interface between the absorbent 4 and the backsheet 3 in the first region 61, and covers the entire interface between the colored second sheet 5 and the backsheet 3 in the second region 62.

The coating pattern of the third adhesive S3 is an intermittent coating pattern in which coated areas 76 to which the third adhesive S3 is applied are mixed with uncoated areas 77. By applying the third adhesive S3 in an intermittent coating pattern, it is possible to increase flexibility at the interface between the absorbent body 4 and the backsheet 3 in the first region 61 and at the interface between the colored second sheet 5 and the backsheet 3 in the second region 62.
The third adhesive S3 is not particularly limited, and any adhesive that is typically used for adhesives can be used.

5, the second region 62 is located so as to surround the entire periphery of the first region 61, and can be considered as the peripheral portion of the absorbent body 4. In the second region 62, the third adhesive S3 is a fixing material that fixes the backsheet 3 and the colored second sheet 5, and the fixing material is located in the peripheral portion of the absorbent body 4. In the second region 62, the third adhesive S3 defines the region inside the panty liner 1 where the absorbent body 4 is located.
The periphery of the absorbent body 4 is fixed by the third adhesive S3 (fixing material) arranged in the second region 62, so that the absorbent body 4 is less likely to twist, and is configured to exhibit good liquid absorption. Furthermore, highly rigid recessed portions 8 are positioned on the four corners of the absorbent body 4, which is less likely to twist, thereby suppressing twisting of the topsheet 2 in the excretory part facing region 52. This reduces the physical discomfort felt when worn due to twisting, and also improves the shape retention of the leakage preventing horizontal grooves 6.

[Fourth adhesive S4]
In this embodiment, an example is given in which the absorbent body 4 constituting a part of the panty liner 1 has a laminated structure in which one absorbent sheet is folded. In the case of such a laminated structure, the fourth adhesive S4 may be disposed on the surface of the absorbent body that is on the inside when folded, as shown in FIG. 6. This prevents the absorbent body 4 from opening, and improves the shape retention of the absorbent body 4. The absorbent body 4 shown in FIG. 6 is a plan view of the absorbent body 4 in a folded state. As shown in FIG. 6, the coating region 74 of the fourth adhesive S4 is located, for example, in the center of the absorbent body 4 in the lateral direction Y.
The coating pattern of the fourth adhesive S4 is an intermittent coating pattern in which coated areas 76 to which the fourth adhesive S4 is applied are mixed with uncoated areas 77. The intermittent coating pattern increases the flexibility of the coated areas 74 of the fourth adhesive S4, suppresses the occurrence of liquid passage obstruction due to the adhesive, and improves liquid permeability.
The fourth adhesive S4 is not particularly limited, and any adhesive that is typically used for adhesives can be used.

<Additional Description of This Embodiment>
The following provides a supplementary explanation of this embodiment.

[Method of measuring absorption capacity]
The absorption capacity of each of the components constituting the panty liner 1, that is, the top sheet 2, the colored second sheet 5, and the absorbent body 4, can be measured by the following measurement method.
The absorption capacity of each member to be measured is measured in accordance with JIS K 7223-1996, which is a water absorption test method for superabsorbent resins. Each member is removed from the absorbent article (panty liner 1) and cut into a sample of a predetermined size. The sample is immersed in physiological saline (0.9 wt% sodium chloride water) adjusted to 25°C so that the entire sample is immersed. 10 minutes after the start of immersion, the sample is removed from the physiological saline and dehydrated using a centrifugal dehydrator (Kokusan Co., Ltd., Model 130c Special). The dehydration conditions are 800 rpm x 5 minutes. After dehydration, the mass of the sample is measured and the centrifugal retention (unit: g/g) is calculated according to the following formula, and the calculated value is the absorption capacity of the member to be measured. In the following formula, each mass is in g.
Centrifugal retention amount = (mass of sample after centrifugal dehydration - mass of sample before water absorption) / mass of sample before water supply Measurement was performed five times, excluding one value from each of the top and bottom, and the average value of the remaining three values was taken as the measured value. The measurement was performed at 23 ± 2°C and humidity of 50 ± 5%, and the sample absorbent was stored in the same environment as the measurement for at least 24 hours before the measurement.

[How to check coated and non-coated areas]
Whether an adhesive-coated region has coated and uncoated parts can be confirmed by the following method.
The area coated with the adhesive is colored with toner, and the toner-colored portion is observed using a microscope with an image processing function. This makes it possible to confirm that the coated portion 76 and the non-coated portion 77 are mixed. Furthermore, by observing using the microscope and processing the image, it is possible to calculate the area of the coated area, the area of the coated portion 76 that is the portion colored with toner, the dimension of the non-coated portion 77 in the horizontal direction Y, and the like.
Furthermore, the surface of the observation target member having an area coated with adhesive can be colored with toner and observed to confirm the coated area.

[Adhesive coating example]
(First adhesive S1)
From the viewpoints of suppressing the occurrence of residual liquid on the top sheet 2, increasing the flexibility in the coated area 71 of the first adhesive S1, which is the first hydrophobic adhesive, and further suppressing the occurrence of liquid passage inhibition due to the adhesive, it is preferable that the proportion of non-coated portions 77 in the coated area 71 of the first adhesive S1 be 50% or more and 90% or less.

(Second adhesive S2)
The coating width (the dimension of the coated region 72 in the lateral direction Y) of the second adhesive S2, which is the second hydrophobic adhesive, is preferably shorter than the dimension of the lateral direction Y of the leakage preventing grooves 6, from the viewpoints of preventing the colored second sheet 5 from floating from the absorbent body 4 and improving liquid transfer while preventing the occurrence of liquid backflow. The coating width of the second adhesive S2 is preferably 5 mm or more, more preferably 10 mm or more, and is 90% or less, more preferably 70% or less, of the dimension of the lateral direction Y of the leakage preventing grooves 6.

From the viewpoints of suppressing the occurrence of residual liquid on the colored second sheet 5, increasing the flexibility of the coated area 72 of the second adhesive S2, and further suppressing the occurrence of inhibition of liquid passage due to the adhesive, it is preferable that the proportion of the non-coated portion 77 in the coated area 72 of the second adhesive S2 is 50% or more and 90% or less.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, a panty liner (discharge sheet) is shown as an example of the absorbent article, but the absorbent article of the present invention is not limited to this. The absorbent article of the present invention may be a urine pad, a sanitary napkin, or the like.

In addition, for example, in the above embodiment, the second adhesive S2 disposed between the colored second sheet 5 and the absorbent body 4 is applied in an intermittent spiral coating pattern, but the coating pattern shape is not limited to this. For example, as in the panty liner 1 shown in Figure 7, the second adhesive S2 may have a shape in which multiple linear lines extending parallel to the horizontal direction Y in a plan view are positioned intermittently in the vertical direction X.

Also, for example, in the above-mentioned embodiment, an example was given in which the planar shape of the colored second sheet 5 is substantially the same as the topsheet 2 and the backsheet 3, but this is not limiting. It is sufficient that the colored second sheet 5 is arranged so as to cover the absorbent body 4, and the absorbent body 4 is located within the area in which the colored second sheet 5 is located in a plan view. In this way, the absorbent body 4 that has retained bodily fluids is covered by the colored second sheet 5, thereby achieving a liquid concealment effect. Figure 8 shows another example of a colored second sheet.
A panty liner 101 shown in Fig. 8 differs from the panty liner 1 only in the outer shape of the colored second sheet. In Fig. 8, the same components as those in the panty liner 1 are denoted by the same reference numerals, and the description thereof will be omitted.
As shown in Fig. 8, the colored second sheet 105 may have a rectangular shape slightly larger than the absorbent body 4 in a plan view. In Fig. 8, the colored second sheet 105 is indicated by a dashed line. In the example shown in Fig. 8, the colored second sheet 105 has the same overall length dimension in the longitudinal direction X as the absorbent body 4. The front end edge of the colored second sheet 105 and the front end edge of the absorbent body 4 are at the same position in a plan view. The rear end edge of the colored second sheet 105 and the rear end edge of the absorbent body 4 are at the same position in a plan view. The colored second sheet 105 has a larger dimension in the lateral direction Y than the absorbent body 4. The left edge of the colored second sheet 105 is located outward in the lateral direction Y from the left edge of the absorbent body 4. The right edge of the colored second sheet 105 is located outward in the lateral direction Y from the right edge of the absorbent body 4.
In the panty liner 101, the difference in color between the area where the colored second sheet 105 is present and the area where it is not present allows the wearer to intuitively recognize the presence of the colored second sheet 105. The color reminds the wearer that the panty liner 101 has a liquid concealing effect, providing a sense of security.

In the panty liner 101, in the region where the absorbent 4 and the colored second sheet 105 overlap, the absorbent 4 and the backsheet 3 are joined by a third adhesive S3. In the panty liner 101, in the region where the colored second sheet 105 is located but where the absorbent 4 is not located, the colored second sheet 105 and the backsheet 3 are joined by the third adhesive S3. In the panty liner 101, in the region where the colored second sheet 105 is not located, the topsheet 2 and the backsheet 3 are joined by the third adhesive S3.
5, and is a peripheral portion that entirely surrounds the absorbent body 4. In the panty liner 101, the region where the absorbent body 4 is not located corresponds to the second region 62 of the panty liner 1 in Fig. 5, and is a peripheral portion that entirely surrounds the absorbent body 4. In the region of the panty liner 101 where the absorbent body 4 is not located, the third adhesive S3 is a fixing material that fixes the colored second sheet 105 and the back sheet 3, or fixes the top sheet 2 and the back sheet 3, and the fixing material is located in the peripheral portion of the absorbent body 4.

1, 101...Panty liner (absorbent article)
2: Top sheet 3: Back sheet 4: Absorbent body 5, 105: Colored second sheet 6: Horizontal leakage-preventing groove 11: First constricted portion 12: Second constricted portion 17a: Left side edge 17b: Right side edge 21: First imaginary line 22: Second imaginary line 51: Front region 52: Region facing excretory portion 53: Rear region

Claims (13)

A vertical direction corresponds to the front-to-back direction of a wearer, and a horizontal direction perpendicular to the vertical direction,
the excretory part facing region being located in the center in the longitudinal direction, a front region being located forward in the longitudinal direction from the excretory part facing region, and a rear region being located rearward in the longitudinal direction from the excretory part facing region,
A surface sheet positioned on the skin side;
A back sheet located on the non-skin side;
an absorbent body located between the top sheet and the back sheet, the absorbent body having a longitudinal length shorter than the top sheet and the back sheet,
A colored second sheet is provided between the top sheet and the absorbent body, the second sheet being positioned so as to cover the absorbent body in a plan view,
The absorbent body is a member having the highest absorption capacity among the members constituting the absorbent article,
the skin side of the absorbent article has a pair of front and rear leakage prevention lateral grooves formed by integrally squeezing the top sheet and the colored second sheet toward the non-skin side of the absorbent article so as not to reach the absorbent body, each of the pair of leakage prevention lateral grooves having a convex shape that protrudes outward in the longitudinal direction in a plan view, and tips of the convex portions of the pair of leakage prevention lateral grooves are located within a region of the absorbent body in the longitudinal direction in a plan view,
The absorbent article has a pair of left and right first constricted portions and a pair of left and right second constricted portions provided on both left and right side edges along a longitudinal direction of the excretory part facing region,
an absorbent article, wherein the leakage preventing horizontal groove does not cross a first imaginary line connecting the pair of first constricted portions and a second imaginary line connecting the pair of second constricted portions in a plan view; The absorbent article according to claim 1 , wherein the absorbent body contains a highly absorbent polymer and the entire surface is non-compressed. The absorbent article according to claim 1 or 2, wherein the colored second sheet has water absorbency and is disposed over the entire surface of the absorbent article. a first hydrophobic adhesive disposed in an intermittent coating pattern between the colored second sheet and the top sheet;
The absorbent article according to claim 1 , wherein the first hydrophobic adhesive is disposed over the entire area where the colored second sheet and the top sheet overlap in a plan view. a second hydrophobic adhesive disposed in an intermittent coating pattern between the colored second sheet and the absorbent body;
The absorbent article according to claim 1 , wherein the second hydrophobic adhesive is disposed in a part of an area where the colored second sheet and the absorbent body overlap in a plan view. The absorbent article according to claim 5 , wherein the second hydrophobic adhesive is located between the pair of front and rear horizontal leakage preventing grooves in a plan view. the skin side of the absorbent article has a recessed portion formed by integrally squeezing the top sheet and the colored second sheet, and the recessed portion is located so as to be at least partially in contact with both left and right side portions of a front end region of the absorbent body and both left and right side portions of a rear end region of the absorbent body;
The absorbent article according to claim 1 , further comprising a fixing material that is disposed around the periphery of the absorbent body in a plan view and joins the back sheet and the second sheet. The absorbent article has a row of apertures in a lateral center thereof, the row being formed by arranging a plurality of apertures in the top sheet along a longitudinal direction,
The absorbent article according to claim 7 , wherein the recessed portion does not overlap with the row of apertures in a plan view. The absorbent article according to any one of claims 1 to 7, wherein the absorbent article has a row of apertures in the horizontal center, the row of apertures being formed by arranging a plurality of apertures in the top sheet along the vertical direction, the row of apertures being arranged over the entire vertical length of the absorbent article excluding both vertical ends. 10. The absorbent article according to claim 1, wherein each of the pair of front and rear leakage-preventing horizontal grooves is located outward in the vertical direction of the absorbent article from the first imaginary line and the second imaginary line, and each of the pair of leakage-preventing horizontal grooves is located closer to the excretory part facing region than a position in each of the front and rear regions that has the same width as the maximum width in the horizontal direction of the excretory part facing region. The absorbent article according to claim 1 , wherein the leakage preventing horizontal grooves are positioned, in a plan view, so as not to cross an individual packaging fold line formed by folding the absorbent article in the vertical direction when individually packaging the absorbent article. The absorbent article according to claim 11 , wherein, in an individually packaged state, at least one of the pair of front and rear leakage-preventing horizontal grooves is located between at least one of the first imaginary line and the second imaginary line and the individual packaging fold line, and do not overlap each other in a planar view. the left and right side edges of the absorbent article have a pair of left and right convex shapes that protrude laterally outward between the pair of left and right first constricted portions and the pair of left and right second constricted portions,
The absorbent article according to any one of claims 1 to 12, wherein the maximum width in the lateral direction in a region between the pair of left and right first constrictions and the pair of left and right second constrictions is narrower than the maximum width in the lateral direction in the front region and the rear region.

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